Day date correcting device

ABSTRACT

The movement comprises a calendar correcting device independent of the mechanism automatically driving the calendar indicators. This device is controlled by the winding and hand setting stem having a third axial position for the calendar correction and it comprises a pinion driven by the stem when the latter is rotated in correcting position. The pinion carries a correcting member driving the calendar indicators. A frictional coupling provided between the pinion and the correcting member however permits the latter to stay at rest when the mechanism automatically driving the calendar indicators just engages the same.

United States Patent [191 F luck et al.

[111 3,820,318 June 28, 1974 4] DAY-DATE CORRECTING DEVICE [75]Inventors: Josef Fluck; Roland Zaugg, both of Grenchen, Switzerland [73]Assignee: A. Schild S.A., Canton of Soleure,

Switzerland [22] Filed: Nov. 2, 1972 [21] Appl. No.: 303,047

Related US. Application Data [62] Division of Ser. No. 172,464, Aug. 17,1971, Pat. No.

[30] Foreign Application Priority Data Nov. 9, 1972 Switzerland 12400/72[52] US. Cl. 58/58 [51] Int. Cl. G04b 19/24 [58] Field of Search 58/4,5, 58

[56] References Cited UNlTED STATES PATENTS 3,597,916 8/197] Nakagawa58/58 Primary Examiner-George H. Miller, Jr. Attorney, Agent, orFirm-Stevens, Davis, Miller & Mosher [5 7] ABSTRACT The movementcomprises a calendar correcting device independent of the mechanismautomatically driving the calendar indicators. This device is controlledby the winding and hand setting stem having a third axial position forthe calendar correction and it comprises a pinion driven by the stemwhen the latter is rotated in correcting position. The pinion carries acorrecting member driving the calendar indicators. A frictional couplingprovided between the pinion and the correcting member however pennitsthe latter to stay at rest when the mechanism automatically driving thecalendar indicators just engages the same.

4 Claims, 3 Drawing Figures PATENTEDJUH 2a 1924 SHEET 2 [IF 3 DAY-DATECORRECTING DEVICE This is a division of application, Ser. No. 172,464,filed Aug. 17, 1971, now US. Pat. No. 3,735,581.

BACKGROUND OF THE INVENTION 1. Field of the Invention This inventionrelates to calendar watch movements and in particular to such movementscomprising at least one indicator automatically driven one step forwardevery 24 hours by means of a driving mechanism, and a calendarcorrecting device including a rotary member driven in rotation togetherwith a winding stem when the latter has been shifted into apredetermined calendar correcting axial position.

2. Description of the Prior Art The calendar watch movements known inthe art and indicating either the month day alone or the month day andthe week day usually comprise a calendar correcting device enablingresetting the calendar indicators if the same, for any reason, .do nolonger indicate the correct date and/or week day. In a great number ofthe known calendar watch movements the calendar correcting device isindependent of the mechanism automatically driving the calendarindicators one step forward every 24 hours. This driving mechanismusually comprises either a driving stud or a driving pawl engaging thecalendar indicator to be driven one step forward and this driving memberremains in meshing relation with the indicator during several hoursevery day. During that time the calendar correcting device cannotpossibly actuate the calendar indicator or indicators because the sameare retained by their driving mechanism. Damages of either the drivingmechanism or the correcting device or a calendar indicator due to amanual actuation of the correcting device during the time the drivingmechanism engages the indicator could even be observed.

Calendar watch movements are, however, known in the art which avoid thatdrawback. The calendar correcting device of these known watch movementsis actuated by the winding stem which directly acts on the members ofthe driving mechanism engaging the indicator for removing them from thelatter when the correcting device is actuated. Such a calendar watchmovement is described, for instance, in the US. Pat. No. 3,413,800 ofthe Assignee. The calendar correcting device disclosed in that patentis, however, a pushing device which is actuated upon shifting thewinding stem in the axial direction. Correcting devices of that kind canperfectly be used with watch movements which are to be mounted inwatchcases, either provided with a recess or comprising a projection forprotecting and also hiding the crown which is secured at the outer endof the winding stem.

Some known calendar watch movements also comprise calendar correctingdevices which operate a calendar correction upon rotating the windingstem after the latter has been shifted in a predetermined axialposition. The watch movements equipped with such correcting devices havethe advantage that they can be mounted in usual watchcases. However,thesecorrecting devices are independent of the mechanism automaticallydriving the calendar indicators, so that they are subject to the jammingand damaging risk mentioned above.

SUMMARY OF THE INVENTION It is therefore an object of this invention toprovide a calendar watch movement comprising a calendar correctingdevice which can be actuated upon rotating the winding stem of the watchmovement thereby avoiding any jamming and damage.

It is also an object of the invention to provide a calendar watchmovement comprising a date indicator and a week day indicator, bothbeing adjustable at will by means of the calendar correcting deviceactuated upon rotating the winding stem of the watch movement.

I It is still a more particular object of the invention to use acalendar correcting device comprising a rotary member composed of apinion and a correcting member having a finger engaging the toothing ofthe calendar indicator, a frictional coupling being provided betweensaid pinion and said correcting member and connecting them to oneanother.

Still further objects of the invention will become apparent in thecourse of the following description.

BRIEF DESCRIPTION OF THE DRAWINGS One embodiment of the calendar watchmovement according to the invention is represented diagrammatically andby way of example in the accompanying drawings.

In the drawings:

FIG. 1 is a plan view on the dial side of a part of the watch movement;

FIG. 2 is a similar plan view, some pieces having been removed, somebroken away and the calendar correcting device being in another workingposition, and

FIG. 3 is a sectional view along line III-III of FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENT The drawings show a part of acalendar watch movement, for instance, for a wrist-watch. This movementcomprises a date indicator and a week day indicator. The date indicatorconsists of a ring 1 being provided with an inner toothingand the weekday indicator comprises a star 2 having fourteen teeth and beingjournalled in the center of the movement together with a disk 3 (FIG. 3)which is secured to star 2 and flush with the upper surface of ring 1.Disk 3 substantially fills the inner space of ring I. The indicators 1and 3 are located below the dial (not shown) in the immediate vicinitythereof. The indications carried by these indicators, i.e. the datesfrom 1 to 3 1 appearing on ring 1 and the seven week days printed ondisk 3 can successively be observed in an elongated window provided inthe watch dial. Ring 1 is prevented from rotating inopportunely by meansof a spring-pressed detent 4 having a nose 5 with a particular shapeprovided for a purpose described more in detail hereinafter. Nose 5engages toothing 6 of ring 1. A spring-pressed detent 7 similarlyprevents star 2 from rotating inopportunely. Detent 7 thereforecomprises a nose 8 urged into the gap between two adjacent teeth 9 ofstar 2.

The date indicator 1 as well as the week day indicator 3 areautomatically driven one step forward every 24 hours by a drivingmechanism actuated gy the watch movement in a manner well known to thoseskilled in the art. This driving mechanism can drive the calendarindicators either progressively or so that they rapidly jump from oneindication to the next one. The driving mechanism which has not beenshown in the drawings engages the date indicator 1 at a point which issubstantially diametrically opposed to the winding stem 14. The drivingmechanism moves every 24 hours the ring 1 one tooth and the star 3 twoteeth forward. Since the week day indications are printed radially ondisk 3, they appear successively in the dial window (not shown). Thewatch movement represented in the drawings is of the mechanical type. Itis accordingly driven by a spring motor and comprises a usual gearingconnecting the barrel enclosing the spring to an escapement mechanism.This movement, however, comprises an off-centered center wheel, theshaft of which carries a cannon pinion connected thereto by a frictionalcoupling. Cannon pinion 10 meshes with a minute wheel (not shown)meshing itself with a further cannon pinion 11 located in the center ofthe watch movement and mounted for rotary motion on a pin secured to thebase-plate 12. Cannon pinion 11 carries the minute hand (not shown). Anhour wheel 13 is pivoted around cannon pinion 11 and the week day star 2is itself mounted for rotary motion on the tubular projection of thehour wheel 13.

As shown in FIG. 3 the watch movement disclosed comprises a winding stem14 extending along a radius of the movement. The inner end of stem 14constitutes a pivot 15 joumalled within a boring provided in baseplate12. Stem 14 is formed with a square portion 16 carrying a usual slidingclutch wheel 17 being provided with an annular grove receiving a portionof a clutch lever 18. Upon sliding along the square portion 16 theclutch wheel 17 can come into meshing relation with a winding pinion 19idly mounted on a cylindrical bearing surface of stem 14. The stemportion extending beyond the winding pinion 19 is provided with anannular grove receiving a stud 20 made integral with a setting lever 21(FIG. 1). The clutch lever 18 is rockably mounted on a pin 22 and it isset under the action of a spring 23. The particular shape of the clutchlever 18 as well as that of the setting lever 21 will be describedhereinafter more in detail in connection with the operation of thesemembers.

The whole correcting device is held in place on baseplate 12 by means ofa large steel plate 24 secured to base-plate 12 by means of a screw 25.Plate 24 is formed with a narrow arm 26 constituting a setting leverspring. Three notches are provided in the edge of this arm in thevicinity of the free end thereof. A stud 27 of the setting lever 21 mayenter either one of these three notches which accordingly may hold thesetting lever 21 in three different positions having predeterminedorientations with respect to the base-plate 12. As with the usual watchmovements, the setting lever 21 is rockably mounted on a setting leverscrew 28, the end of which firmly engages a second rigid arm 29 of plate24, which extends above the winding stem 14 and the setting lever 21.

The chief members of the correcting device are more clearly visible inFIG. 2 in which plate 24 has been removed. This device comprises a plate30 rockably mounted on a stud 31 (FIG. 3) carried by plate 24. Stud 31comprises a head portion 32 which holds a gear 33 axially in place onplate 24. As viewed on the dial side gear 33 is located under rockingplate 30 and the latter is itself arranged under plate 24 holding thewhole correcting device on the base-plate 12. Gear 33,

which also constitutes a setting pinion, is engaged by clutch wheel 17when the latter has been shifted into its hand setting position which isalso the calendar correcting position. The substantially triangularsteel rocking plate comprises a projection 34 carrying an auxiliary gear35. Gear 35 is held axially in place by means of a stud 36 having a flathead portion (FIG. 3). Stud 36 has a bearing surface which is set withforce fit in a bore of plate 30 and it comprises a part extending beyondthat bearing surface within an opening 37 provided in plate 24 (FIG. 1).This projection of stud 36 and opening 37 cooperate with one another inorder to limit the angular motion of plate 30. At its opposed end thisplate 30 is provided with a kneed slot 38, the edges of which areparallel. Slot 38 thus forms an arm 39 on plate 30. The front edge 40 ofarm 39 extends along an arc of a circle centered on the axis of thesetting lever screw 28 when plate 30 is in the position represented inFIG. 1. As explained more in detail hereinafter slot 38 cooperates witha clutching stud 41 made integral with the setting lever 21. I

The calendar correcting device moreover comprises a rotary member 42.Member 42 comprises a gear 43 milled in a portion of a shaft formed witha pivot 44 joumalled in a bore of base-plate 12. At its end opposed topivot 44 this shaft is provided with an annular groove 45. Member 42also comprises a second piece constituted by a steel plate 46 andserving as a correcting member. The shape of plate 46 is clearly shownin FIGS. 1 and 2. It comprises a split annular portion carrying a finger47 extending radially outwards and three inner projections 48 havingtheir inner ends cut along an arc of a circle. Projections 48 bear onthe bottom of grove 45. Correcting member 46 is accordingly connected togear 43 by means of a frictional coupling, the maximum torque of whichmay be adjusted at will. Finger 47 may engage the inner toothing 6 ofthe date ring 1. v

The calendar correcting device still comprises a correcting lever 50which is also cut out of a sheet steel and rockably mounted onbase-plate 12 by means of a step screw 51. Lever 50 comprises two armshaving different lengths and forming an acute angle therebetween. One ofthese arms carries a stud 52 at its end while the other arm is cut so asto form a pawl 53. A circular cut-out 54 is provided between these twoarms so as to form a narrow passage for a spring blade 55 made integralwith an enlarged portion 56 secured to the base-plate 12. As viewed fromthe dial side, lever 50 as well as spring 55 extend above plate 24 andbelow disk 3. The shaft of gear 43 comprises a pivoting surfaceextending between the gear toothing and groove and being joumalled in abore of plate 24. The correcting member 46 connected to gear 43 by meansof a frictional coupling is accordingly located above plate 24 on thesame level as stud 52 and toothing 6 of the date ring 1.

Along one of its edges the clutch lever 18 is provided with twoprojections 57 and 58. Projection 57 is limited by a cranked portion oflever 18.

It will be understood from the preceding description that the calendarcorrecting device of the watch movement shown in the drawings isindependent of the mechanism automatically driving the calendarindicators. Those skilled in the art will also understand that thiscalendar correcting device is combined with the hand setting and windingmechanism and can be controlled upon rotating stem 14. The latter can beshifted into three different axial positions which are predetermined bythe notches provided at the end of the setting lever spring forreceiving stud 27 of the setting lever 21. The innermost position ofstem 14 is, of course, the winding position, in which stud 27 engagesthe outer most notch of the setting lever spring 26. This position hasnot been represented in the drawings. Those skilled in the art will notethat pushing stem 14 from its intermediate axial position represented inFIG. 1 into the winding position causes the clutch lever 18 to rockclockwise around its stud 22 and the clutch wheel to be shifted axiallytoward the winding pinion 19 until it meshes with the latter, thusenabling the watch to be wound up upon rotating the crown being inwinding position. Upon pushing the stem 14 from the position representedin FIG. 1 into the winding position the stud 41 carried by the settinglever slides along the arcuate front edge 40 of the rocking platewithout producing any motion of this plate. The different members of thecalendar correcting device accordingly do not move when the stem ismoved from its intermediate position into its winding position and viceversa. It will also be observed that the members of the calendarcorrecting device are not actuated by the stem 14 being shifted betweenits two innermost axial positions.

In the position represented in FIG. 1 the clutch lever 18 holds theclutch wheel 17 in meshing relation with gear 33 constituting thesetting pinion. The position disclosed of clutch lever 18 is ensured bythe setting lever 21 pressing on projection 58 of lever 18. Thisposition of FIG. 1 is that in which the date indicator and week dayindicator can be moved manually for a correction. In the correctingposition clutching stud 41 stands in the immediate vicinity of the mouthof slot 38. It will thus be noted that stud 41 holds plate 30 in such anangular position that the auxiliary gear stands in meshing relation withpinion 43. Although no spring acts on plate 30, the latter isnevertheless firmly held in the position shown in FIG. 1 so that uponrotating stem 14 in either direction member 42 will rotate therewith.Whatever the rotating direction of member 42 may be, finger 47 of thismember will once engage toothing 6 of the date ring and try to move thesame. However, it should be noted that the nose of detent 4 has not asymmetrical shape. This nose is, on the contrary, cut in such a mannerthat when the date ring is normally at rest, the two teeth 6 being inthe immediate vicinity of the rotary member 42 are not at the samedistance from the axis thereof. As a consequence of that arrangement,the path along which finger 47 drives ring 1 when the rotary member 42rotates counterclockwise in FIG. 1 is longer than the path along whichfinger 47 drives ring 1 when it moves in the opposite direction. Thedifference between the lengths of these two pathes can be adjusted insuch a manner that during the counter-clockwise motion the tip of detentnose 5 moves beyond the tip of the tooth before which it stands at thebeginning of the motion, thereby causing the detent 4 to engage the nexttooth gap of ring 1 and moving the latter one step forward, while duringa rotation of the correcting member 42 in the opposite direction, finger47 does not drive ring 1 far enough in order to cause the tip of nose 5to move over the tip of the tooth before which it stands. Under thesecircumstances the clockwise rotation of member 42 in FIG. 1 does notdrive ring 1 one step forward. The two side edges of detent 4 thus needonly be adjusted adequately in order to cause ring 1 to be driven onestep forward upon rotating member 42 at will either in both directionsor in one direction only.

Upon rotating stem 14 being in its intermediate axial position so thatcorrecting member 42 rotates clockwise in FIG. 1, nose 47 once engagesstud 52 carried by lever 50. This lever accordingly rocks against theaction of spring 55 in such a direction that pawl 53 thereof engagestoothing 9 of the week day star 2. This star is then driven far enoughin order that nose 8 of detent 7 jumps over one tooth 9 of star 2, thuscausing the same to move one step forward. As soon as finger 47 hasmoved beyond stud 52, spring 55 rocks lever 50 back into its restposition represented in FIG. 1. Upon driving the rotary member 42counter-clockwise, finger 47 also engages stud 52 and rocks lever 50.The latter, however, rocks clockwise so that its pawl 53 moves away fromstar 2. This motion of lever 50 thus remains without any action asregaards the calendar correction. Spring 55 also causes lever 50 to comeback to its position of rest once finger 47 has moved beyond stud 52.

Upon rotating stem 14 being in its intermediate correcting position, thecorrecting device disclosed permits to drive at will the date ring 1 onestep forward, when rotary member 42 is driven counter-clockwise and theday star 2 when member 42 is driven clockwise. The device disclosed can,however, easily be arranged so as to operate in a different manner. Forinstance, the detent 4 can be arranged so that finger 47 drives the datering one step forward or backward according to the direction in whichthe stem 14 is itself driven. Lever 50 and spring 55 can also beremoved, the correction of the week day star being then carried out uponpulling stem 14 into its hand setting position disclosed hereinafter,thereby permitting the week day star to be driven by the mechanismautomatically driving the same during the normal movement run.

Whatever the manner in which the device disclosed is used, this devicehas the advantage mentioned hereabove, namely to permit a manualcorrection of the date indicator or of the week day indicator at anytime without risking any jamming action or a damage of any element ofthe device. If nose 47, indeed, engages one tooth 6 of ring 1, when themechanism automatically driving this ring is itself in meshing relationtherewith, pinion 43 rotates alone while the correcting member 46remains at rest owing to the frictional coupling provided between member46 and pinion 43.

In order to set the hands, the stem 14 is pulled outwards from theposition represented in FIG. 1 until it reaches that represented in FIG.2. During this motion the setting lever 21 rocks clockwise and its stud27 engages the innermost notch of the setting lever spring 26. Duringthis rocking motion of the setting lever 21 its clutching stud 41 movesalong slot 38. Due to the gap between the two projections 58 and 57 ofthe clutch lever 18, the latter does not move the clutch wheel 17 nearerto gear 33. The motion of stud 41 along slot 38 produces a clockwiserocking of plate 30 until the projection of stud 36 butts against theedge of opening 37 at a point diametrically opposed to that shown inFIG. 1. In this new position the auxiliary gear 35 stands in meshingrelation with the cannon pinion 10. As in FIG. 1, plate 30 is firmlyheld in the position represented in FIG. 2 by means of stud 41 engagingslot 38. Upon rotating stem 14, cannon pinion 10 is driven together withthe minute wheel, the cannon pinion 11 and the hour wheel 13. The hourwheel itself drives the automatic driving mechanism of the calendar in amanner well known to those skilled in the art and not represented in thedrawings. This driving mechanism can, for instance, comprise a wheelmaking one revolution in 24 hours and carrying two pins engaging, thefirst one, toothing 6, and the second one toothing 9. Another type ofdriving mechanism could, of course, also be used, for instance amechanism causing the calendar indicators to be driven instantaneouslyone step forward. I

Instead of a week day indicator comprising a star with 14 teeth onecould obviously also resort to a week day star having only seven teeth.Due to the shape of plate 30 and in particular to that of slot 38 thecalendar correcting device disclosed has also the advantage that theauxiliary gear 35 is quickly removed from cannon pinion 10, when stem 14is pushed from its hand setting position toward its intermediatecorrecting position. FIG. 2 shows indeed that during that motion stud 41of the setting lever 21 firstly moves along the first part of slot 38and then butts against the edge of arm 39 which defines a great anglewith the first slot part. It is this arrangement which causes plate 30to be rocked quickly around stud 31 and the auxiliary gear 35 to moveout of meshing relation. During the opposite motion, i.e. from theposition represented in FIG. 1 into that represented in FIG. 2, stud 41of the setting lever 21 bears against the other edge of slot 38 andsimilarly causes plate 30 to quickly rock, so that the auxiliary gear 35comes in meshing relation with cannon pinion 10 in a precise manner. Thedevice thus operates without moving the minute hand in an inopportunemanner. The device disclosed finally permits an adjustment of the posi'tion of the sweep second hand so that the same will be exactly at thetop of the dial when the minute hand lies opposite a division of theminute scale carried by the watch dial.

Various modifications of the embodiment described will appear obvious tothose skilled in the art within the scope of the appended claims.

We claim:

1. A calendar watch movement comprising, in combination, a dateindicator, a week day indicator, a driving mechanism automaticallydriving said indicators one step forward every 24 hours, a rotarysetting stem being axially shiftable into a predetermined correctingposition, a rotary member adapted for correcting said date indicator,connecting means provided between said stem and said rotary member andbeing adapted for driving said rotary member in rotation upon rotatingsaid stem when said stem is in the correcting position, said connectingmeans being independent of said driving mechanism, a week day correctinglever being actuated by said rotary member and adapted for actuatingsaid week day indicator, spring means normally holding said correctinglever in a rest position, and a finger forming part of said rotarymember, said finger being adapted to rock said correcting lever againstthe action of said spring means from its rest position in one or theother direction away from or toward said week day indicator according towhether said rotary member is driven in one or the other direction.

2. In the calendar watch mechanism of claim 1, the week day indicatorbeing provided with a toothing comprising 14 teeth and driven by saiddriving mechanism two teeth forward every 24 hours while said correctinglever moves said week day indicator only one tooth forward during everycomplete revolution of said rotary member in the direction causing saidcorrecting lever to rock toward said week day indicator.

3. The calendar watch movement of claim 1 wherein said finger extends onthe same level as said date indicator and a stud secured to saidcorrecting lever, said finger engaging successively said date indicatorand said stud upon rotation of said rotary member.

4. A calendar watch movement comprising, in combination, a dateindicator, a week day indicator, a driving mechanism automaticallydriving said indicators one step forward every 24 hours, a rotarysetting stem being axially shiftable into a predetermined correctingposition, a rotary member adapted for correcting said date indicator,connecting means provided between said stern and said rotary member andbeing adapted for driving said rotary member in rotation upon rotatingsaid stem when said stem is in the correcting position, said connectingmeans being independent of said driving mechanism, and a week daycorrecting lever being actuated by said rotary member and adapted foractuating said week day indicator, the week day indicator being providedwith a toothing comprising fourteen teeth and driven by said drivingmechanism two teeth forward every 24 hours while said correcting levermoves said week day indicator only one tooth forward during everycomplete revolution of said rotary member in the direction causing saidcorrecting lever to rock toward said week day indicator.

1. A calendar watch movement comprising, in combination, A dateindicator, a week day indicator, a driving mechanism automaticallydriving said indicators one step forward every 24 hours, a rotarysetting stem being axially shiftable into a predetermined correctingposition, a rotary member adapted for correcting said date indicator,connecting means provided between said stem and said rotary member andbeing adapted for driving said rotary member in rotation upon rotatingsaid stem when said stem is in the correcting position, said connectingmeans being independent of said driving mechanism, a week day correctinglever being actuated by said rotary member and adapted for actuatingsaid week day indicator, spring means normally holding said correctinglever in a rest position, and a finger forming part of said rotarymember, said finger being adapted to rock said correcting lever againstthe action of said spring means from its rest position in one or theother direction away from or toward said week day indicator according towhether said rotary member is driven in one or the other direction. 2.In the calendar watch mechanism of claim 1, the week day indicator beingprovided with a toothing comprising 14 teeth and driven by said drivingmechanism two teeth forward every 24 hours while said correcting levermoves said week day indicator only one tooth forward during everycomplete revolution of said rotary member in the direction causing saidcorrecting lever to rock toward said week day indicator.
 3. The calendarwatch movement of claim 1 wherein said finger extends on the same levelas said date indicator and a stud secured to said correcting lever, saidfinger engaging successively said date indicator and said stud uponrotation of said rotary member.
 4. A calendar watch movement comprising,in combination, a date indicator, a week day indicator, a drivingmechanism automatically driving said indicators one step forward every24 hours, a rotary setting stem being axially shiftable into apredetermined correcting position, a rotary member adapted forcorrecting said date indicator, connecting means provided between saidstem and said rotary member and being adapted for driving said rotarymember in rotation upon rotating said stem when said stem is in thecorrecting position, said connecting means being independent of saiddriving mechanism, and a week day correcting lever being actuated bysaid rotary member and adapted for actuating said week day indicator,the week day indicator being provided with a toothing comprisingfourteen teeth and driven by said driving mechanism two teeth forwardevery 24 hours while said correcting lever moves said week day indicatoronly one tooth forward during every complete revolution of said rotarymember in the direction causing said correcting lever to rock towardsaid week day indicator.